I am having an issue with the TBrowser since I moved to CC7 and ROOT 6.12.06 (issue is still present in 6.16.00).
I have a ROOT file with many TCanvas saved, containing THStacks, Histograms and a TLegend.
When I open any TCanvas which is not the first one in the file (first one in the first TDirectory containing TCanvas), the colours are not displayed (e.g. h_k_m_colourless.png).
If I then open this first TCanvas in the file, colours are fine and any further TCanvas that I open looks fine (e.g. h_k_m_coloured.png, which is the same one as the colourless).
At the same time, when closing them, I receive the following error: Error in <TList::Clear>: A list is accessing an object (0x7846c70) already deleted (list name = TList)
I assume those are related since I had none of those problem before.
I guess, problem is clear. Most probably, custom colors are used in the code. Custom colors are written into first TCanvas instance, but not in all consequent instances.
Not really.
In previous ROOT versions custom colors always were written in each TCanvas.
Now there is function TColor::DefinedColors(). It remembers (in static member) how many colors were written last time. Only if numbers of new colors exceed 50, list of colors will be written again.
